if the image isn't loading:
It looks like you aren't using the correct syntax for "select" queries. The "end" preceding the cursor in your screenshot is where Lil expects an expression, column name, or where/orderby/by clause. If your intention is to make a table from scratch you might mean something like:
select c1:opt from ()
But if the goal is simply to turn the list "opt" into a single-column table you could instead use the "table" operator instead of a query form:
table "alpha","beta","gamma" +---------+ | value | +---------+ | "alpha" | | "beta" | | "gamma" | +---------+
Does that make sense?